L'Oreal Paris Root Rescue

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These permanent haircolor "minis" are a boon for gray coverage between colorings. L'Oreal Paris Root Rescue is designed to last three weeks. It garnered top consumer scores for providing seamless coverage and for the accuracy of the color's match with the swatch on the box. "It looked natural and blended with my existing color," noted one volunteer. Some testers reported that the dye didn't cover resistant grays and complained of fading. Those results were echoed in the lab, where our experts found that root touch-ups faded more quickly than permanent haircolor. Testers were divided on the benefits of a root touch-up. Reported one convert: "The ease of it means I could use it often. It's much better for me than using an entire box of color." Feedback from an on-the-fence tester: "It only stretched the time between dyeings by maybe two weeks."